904L UNS N08904 /SUS890L Stainless Steel welded Tubes

904L（UNS N08904 /SUS890L） is a high-alloy austenitic stainless steel known for its exceptional corrosion resistance, especially in aggressive environments. When it comes to 904L welded tubes, they possess several key characteristics:

1. Corrosion Resistance: The primary characteristic of 904L welded tubes is their outstanding corrosion resistance. They exhibit excellent resistance to a wide range of corrosive media, including sulfuric acid, phosphoric acid, acetic acid, and chloride solutions. This makes them suitable for applications in industries such as chemical processing, oil and gas, and desalination.

2. High Strength: 904L welded tubes offer high strength and durability. They have a higher yield strength and tensile strength compared to standard austenitic stainless steels, allowing them to withstand high pressures and mechanical stresses without deformation or failure. This makes them ideal for applications that require both corrosion resistance and structural integrity.

3. Heat Resistance: 904L welded tubes have good heat resistance, allowing them to maintain their mechanical properties at elevated temperatures. They can withstand high-temperature environments without significant loss of strength or corrosion resistance, making them suitable for applications in heat exchangers, boilers, and other high-temperature equipment.

4. Low Carbon Content: 904L welded tubes have a low carbon content, which provides improved resistance to intergranular corrosion. This makes them less susceptible to sensitization and subsequent corrosion in certain environments, such as after welding or exposure to high temperatures.

5. Excellent Weldability: 904L welded tubes exhibit excellent weldability. They can be easily welded using common welding techniques, such as TIG (Tungsten Inert Gas) or MIG (Metal Inert Gas) welding. However, it is important to use appropriate welding procedures and filler materials to ensure the best results and maintain the corrosion resistance of the material.

6. Non-Magnetic: 904L welded tubes are non-magnetic in the annealed condition. This makes them suitable for applications where magnetic properties are undesirable, such as in certain electronic or medical equipment.

7. Versatility: 904L welded tubes are versatile and can be used in various applications that require high corrosion resistance and strength. They are commonly used in industries such as chemical processing, oil and gas, desalination, pulp and paper, and pharmaceuticals.

Overall, the characteristics of 904L welded tubes make them a preferred choice in demanding applications where corrosion resistance, strength, and heat resistance are vital considerations.